Barangay Santa Mesa

Situated in Mabini, Batangas, Barangay Santa Mesa is one of 34 barangays that make up the municipality within CALABARZON.

According to the 2020 Philippine census, Barangay Santa Mesa had a population of 1,279. This made it the 18th largest of 34 barangays in Mabini by population, placing it in the middle tier of the municipality. Residents of Barangay Santa Mesa accounted for approximately 2.51% of the total population of Mabini, which stood at 50,858 in the same census year.

Census comparisons between 2015 and 2020 show Barangay Santa Mesa moving from 1,126 residents to 1,279 residents, an intercensal change of +13.6%. The trajectory indicates a growing community. Barangay Santa Mesa is officially classified as rural, a designation applied to barangays with lower population density and predominantly non-built-up land use.

Mabini is a municipality comprising 34 barangays, and serves as the governing unit directly responsible for local services in Barangay Santa Mesa, including public health, sanitation, peace and order, and civil registration. Within the wider province of Batangas, which contains 1,078 barangays across its component cities and municipalities, Barangay Santa Mesa ranks 779th by 2020 population. Batangas is classified as a 1st by the Bureau of Local Government Finance, a category that reflects the province's annual regular income.

Barangay Santa Mesa is governed by an elected Sangguniang Barangay composed of a Punong Barangay and seven kagawads, with the Sangguniang Kabataan representing the youth. The next BSKE, set for Monday, November 2, 2026, will elect officials to four-year terms as provided under Republic Act No. 12232.